GB2351411A - Calibration of digital cameras - Google Patents

Calibration of digital cameras

Info

Publication number
GB2351411A
GB2351411A GB0022495A GB0022495A GB2351411A GB 2351411 A GB2351411 A GB 2351411A GB 0022495 A GB0022495 A GB 0022495A GB 0022495 A GB0022495 A GB 0022495A GB 2351411 A GB2351411 A GB 2351411A
Authority
GB
United Kingdom
Prior art keywords
calibration
digital cameras
calibrated
light source
hologram
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0022495A
Other versions
GB0022495D0 (en
GB2351411B (en
Inventor
Ronald Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intel Corp
Original Assignee
Intel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Corp filed Critical Intel Corp
Publication of GB0022495D0 publication Critical patent/GB0022495D0/en
Publication of GB2351411A publication Critical patent/GB2351411A/en
Application granted granted Critical
Publication of GB2351411B publication Critical patent/GB2351411B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/67—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
    • H04N25/671—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction
    • H04N25/673—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction by using reference sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Studio Devices (AREA)
  • Eye Examination Apparatus (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

A lens cover (12) for a digital camera (10) provides a diffused light source for calibration purposes which approximates a flat field light source. In this way, digital cameras may be calibrated in the field under user control. The diffuser may be in the form of a light transmissive hologram (16). The hologram may have formed thereon a plurality of light diffusing shapes. The camera may be calibrated either by itself or advantageously when connected to a host computer. The user may be prompted through the calibration sequence.
GB0022495A 1998-04-17 1999-04-13 Calibration of digital cameras Expired - Fee Related GB2351411B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/062,262 US6147702A (en) 1998-04-17 1998-04-17 Calibration of digital cameras
PCT/US1999/008035 WO1999055081A1 (en) 1998-04-17 1999-04-13 Calibration of digital cameras

Publications (3)

Publication Number Publication Date
GB0022495D0 GB0022495D0 (en) 2000-11-01
GB2351411A true GB2351411A (en) 2000-12-27
GB2351411B GB2351411B (en) 2003-02-12

Family

ID=22041310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0022495A Expired - Fee Related GB2351411B (en) 1998-04-17 1999-04-13 Calibration of digital cameras

Country Status (11)

Country Link
US (1) US6147702A (en)
JP (1) JP2002512492A (en)
KR (1) KR100431400B1 (en)
CN (1) CN1134153C (en)
AU (1) AU3745499A (en)
DE (1) DE19983110B4 (en)
GB (1) GB2351411B (en)
IN (1) IN192587B (en)
MY (1) MY124601A (en)
TW (1) TW374865B (en)
WO (1) WO1999055081A1 (en)

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DE19727281C1 (en) * 1997-06-27 1998-10-22 Deutsch Zentr Luft & Raumfahrt Geometric calibration device for CCD camera
EP1333258B1 (en) 2000-11-10 2013-08-21 ARKRAY, Inc. Method for correcting sensor output
EP1303147A1 (en) * 2001-10-12 2003-04-16 CSEM Centre Suisse d'Electronique et de Microtechnique SA Method for calibration of an electronic camera
US7068303B2 (en) * 2002-06-03 2006-06-27 Microsoft Corporation System and method for calibrating a camera with one-dimensional objects
US20050046739A1 (en) * 2003-08-29 2005-03-03 Voss James S. System and method using light emitting diodes with an image capture device
FI118452B (en) * 2005-01-13 2007-11-15 Jot Automation Oy Procedure for creating an image, procedure for testing an electronic device and test apparatus, test chamber and test system
KR100837119B1 (en) * 2006-08-18 2008-06-13 주식회사 세동 A camera calibration method for measuring the image
US20080273117A1 (en) * 2007-05-04 2008-11-06 Sony Ericsson Mobile Communications Ab Digital camera device and method for controlling the operation thereof
DE102009049203B4 (en) 2009-10-13 2016-10-13 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Diagnostic unit for an electronic camera and camera system
KR101871034B1 (en) * 2013-02-13 2018-07-19 유니버시타트 데스 사를란데스 Plenoptic imaging device
CN109040553B (en) 2013-06-13 2021-04-13 核心光电有限公司 Double-aperture zooming digital camera
CN108388005A (en) 2013-07-04 2018-08-10 核心光电有限公司 Small-sized focal length lens external member
US9857568B2 (en) 2013-07-04 2018-01-02 Corephotonics Ltd. Miniature telephoto lens assembly
FR3015842B1 (en) * 2013-12-20 2017-03-10 Office Nat D'etudes Et De Rech Aerospatiales (Onera) DEVICE AND METHOD FOR CALIBRATING AN IMAGER
US9392188B2 (en) 2014-08-10 2016-07-12 Corephotonics Ltd. Zoom dual-aperture camera with folded lens
CN112327463B (en) 2015-01-03 2022-10-14 核心光电有限公司 Miniature telephoto lens module and camera using the same
CN108141504B (en) * 2015-10-02 2019-11-26 惠普发展公司，有限责任合伙企业 Photoresponse heterogeneity inhibits
IL290630B2 (en) 2017-02-23 2023-10-01 Corephotonics Ltd Folded camera lens designs
US11106018B2 (en) 2017-07-07 2021-08-31 Corephotonics Ltd. Folded camera prism design for preventing stray light
IL300459A (en) 2017-07-23 2023-04-01 Corephotonics Ltd Compact folded lenses with large apertures
CN111684333B (en) 2018-03-02 2022-10-21 核心光电有限公司 Spacer designed to mitigate stray light
CN114615399A (en) 2019-01-03 2022-06-10 核心光电有限公司 Dual camera
CN117008281A (en) 2019-02-25 2023-11-07 核心光电有限公司 Folding camera module
CN112067131B (en) * 2019-06-11 2022-02-15 杭州海康微影传感科技有限公司 Thermal imaging camera burn treatment method and device
CN114578518A (en) 2019-08-21 2022-06-03 核心光电有限公司 Lens assembly
US11656538B2 (en) 2019-11-25 2023-05-23 Corephotonics Ltd. Folded zoom camera module with adaptive aperture
KR20230019225A (en) 2020-01-08 2023-02-07 코어포토닉스 리미티드 Multi-aperture zoom digital cameras and methods of using same
KR20240001277A (en) 2020-05-30 2024-01-03 코어포토닉스 리미티드 Systems and methods for obtaining a super macro image
US11914117B2 (en) 2020-07-31 2024-02-27 Corephotonics Ltd. Folded macro-tele camera lens designs including six lenses of ++−+−+ or +−++−+, seven lenses of ++−++−+, or eight lenses of ++−++−++ refractive powers
CN115769108B (en) 2020-09-18 2023-12-05 核心光电有限公司 Pop-up zoom camera
WO2022118176A1 (en) 2020-12-01 2022-06-09 Corephotonics Ltd. Folded camera with continuously adaptive zoom factor
JP2023504293A (en) 2021-01-25 2023-02-02 コアフォトニクス リミテッド Slim pop-out wide camera lens
CN118210137A (en) 2021-03-22 2024-06-18 核心光电有限公司 Camera and mobile device with continuous adaptive scaling factor
JP2023544219A (en) 2021-09-23 2023-10-20 コアフォトニクス リミテッド Large diameter continuous zoom bending telecamera
EP4244670A4 (en) 2021-11-02 2024-03-06 Corephotonics Ltd. Compact double folded tele cameras

Citations (3)

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EP0222548A2 (en) * 1985-10-31 1987-05-20 British Aerospace Public Limited Company Image sensors
US4739394A (en) * 1985-07-17 1988-04-19 Fuji Photo Film Co., Ltd. White balanced electronic still camera
EP0755151A2 (en) * 1995-06-22 1997-01-22 Deutsche Thomson-Brandt Gmbh Camera having a white balancing device

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JPS5746593A (en) * 1980-09-03 1982-03-17 Canon Inc White balance adjusting device for color video camera
US4473289A (en) * 1983-03-24 1984-09-25 Wallace George A Incident light filter for cameras
JPS6489688A (en) * 1987-09-30 1989-04-04 Toshiba Corp Color television camera
JPH06202200A (en) * 1993-01-07 1994-07-22 Minolta Camera Co Ltd Camera
JPH07154672A (en) * 1993-11-29 1995-06-16 Victor Co Of Japan Ltd Adjustment jig for video camera
US5541656A (en) * 1994-07-29 1996-07-30 Logitech, Inc. Digital camera with separate function and option icons and control switches
US5808669A (en) * 1995-02-07 1998-09-15 Adaptive Optics Associates, Inc. Telecine with dual digitizers and multiple scanning beams
US5619029A (en) * 1995-04-04 1997-04-08 Rockwell International Corporation Imaging enhancement for touch cameras
US6545775B1 (en) * 1995-07-21 2003-04-08 Canon Kabushiki Kaisha Control system and units removably attachable to the same
KR100213030B1 (en) * 1995-09-21 1999-08-02 윤종용 Image inputting device
US5821993A (en) * 1996-01-25 1998-10-13 Medar, Inc. Method and system for automatically calibrating a color camera in a machine vision system
US5818525A (en) * 1996-06-17 1998-10-06 Loral Fairchild Corp. RGB image correction using compressed flat illuminated files and a simple one or two point correction algorithm
US5781807A (en) * 1996-08-16 1998-07-14 Lester A. Dine, Inc. Close-up attachment for a digital camera
US5701015A (en) * 1996-08-19 1997-12-23 Eastman Kodak Company Infrared illumination system for digital camera
US5918192A (en) * 1997-01-23 1999-06-29 Intel Corporation Method for calibrating a digital camera to a PC monitor to enhance picture quality of a picture captured by the digital camera and displayed on the PC monitor
US5740480A (en) * 1997-02-20 1998-04-14 Eastman Kodak Company Camera with movable first lens cover which supports movable second lens cover which opens during movement of first lens cover
ATE328302T1 (en) * 1998-11-06 2006-06-15 Smartlens Corp IMAGE MODIFIER FOR PHOTOGRAPHIC USE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739394A (en) * 1985-07-17 1988-04-19 Fuji Photo Film Co., Ltd. White balanced electronic still camera
EP0222548A2 (en) * 1985-10-31 1987-05-20 British Aerospace Public Limited Company Image sensors
EP0755151A2 (en) * 1995-06-22 1997-01-22 Deutsche Thomson-Brandt Gmbh Camera having a white balancing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WADLE ET AL "HOLOGRAPHIC DIFFUSERS" OPTICAL ENGINEERING VOL.33 NO 1 1/1/1994 PP213-218 XP000421283. *

Also Published As

Publication number Publication date
MY124601A (en) 2006-06-30
TW374865B (en) 1999-11-21
CN1297645A (en) 2001-05-30
US6147702A (en) 2000-11-14
KR20010042767A (en) 2001-05-25
CN1134153C (en) 2004-01-07
GB0022495D0 (en) 2000-11-01
WO1999055081A1 (en) 1999-10-28
JP2002512492A (en) 2002-04-23
DE19983110T1 (en) 2001-06-13
IN192587B (en) 2004-05-08
DE19983110B4 (en) 2006-06-29
AU3745499A (en) 1999-11-08
GB2351411B (en) 2003-02-12
KR100431400B1 (en) 2004-05-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170413